Ornamental rubber material



J. STEIN ORNAMENTAL RUBBER MATERIAL April 26, 1938..

Filed Feb. 8, 1936 5 Sheets-Sheet 1 mv TOR' Lhcob 'un, sv

m/mm) 'ATTORNEYS J. STEIN 2,115,151

ORNAMENTAL RUBBER MATERIAL 4 April'26, 1938.

5 Sheets-Sheet 2 Filed Feb. 8, 1936 INVENTOR m Y Jaco SfefJ/L BY M ATTORNEYS April 2 6, 1938. J. STEIN 2,115,151

ORNAMENTAL RUBBER MATERIAL* Filed Feb. 8, 1956 5 Sheets-Shree?I 3 ATTORNEYS April 26, 1938. J. STEIN ORNAMENTAL RUBBER MATERIAL 5 Sheets-Sheet 4 Filed Feb. V8, 1936 lllllllw "V'/L BY WK M Y ATTORN EYS April 26, 1938.

J: STI-:IN

ORNAMENTAL RUBBER MATERIAL Filed Feb. 8,' 1936 5 Sheets-Sheet 5 l INENlQf/R.

BY X11/0C# (r M ATTORNEYS Patented Apr. 26, 1938 nire sa 2 Claims.

The invention relates to a new and improved method of making ornamental rubber material, and to a new and improved mechanism for making such ornamental material.

One of the objects of this invention is to produce an ornamental material which is made of two or more separate sheets of rubber or other material, which have been suitably joined.

Another object of the invention is to provide an ornamental fabric made wholly or partially of rubber or other stretchable material, which has been crened so as to produce a herringbone effect, or other surface eifect. The invention makes it possible to secure various ornamental surface designs, such as a wavy or circular pattern, or a sinusoidal pattern.

Another object of the invention is to provide said ornamental effect, or other ornamental elect, by joining two sheets of rubber under suitable pressure, while causing one of said sheets to travel slightly faster than the other sheet.

Another object of the invention is to provide an improved method whereby the above effect is secured upon one of two sheets of rubber or other material, the other sheet of rubber or other material, having a different surface appearance than the first-mentioned sheet.

Other objects of the invention will be stated in the following description and drawings, which illustrate preferred embodiments thereof, it being understood that the above general statement of the objects of the invention is intended generally to explain the same, without limiting it in any manner.

Fig. l is a side elevation of the improved inachine.

Fig. 2 is a sectional View on the line 2-2 of Fig. 3.

Fig. 3 is a top plan view of Fig. 1.

Fig. 4 is a sectional view on the line dof Fig. 2.

Fig. 5 is a partial elevation of the pair-of rollers which are used in the machine.

Fig. 6 is a sectional view on the line 6-6 of Fig. 5.

Fig. 7 is a top plan view showing the fair side of the combined rubber ,materiaL when a herringbone effect is produced.

Fig. 8 is a bottomY plan View of the material whose fair side is illustrated in Fig. 7. The side of the material which is illustrated in Fig. 7, is ordinarily exposed to View, and the side which is shown in Fig. 8, may be considered as being the rear face of the material,

Fig. 9 is a sectional View on the line @-9 of Fig. '7.

In the particular embodiment described herein the ornamental material is made by joining or doubling two sheets of rubber. l-lowever I do not Wish Yto be limited to the use of rubber, since I may utilize other stretchable materials. Like- Wise the invention can utilize one sheet of stretchable material, and another sheet of relatively non-stretchable material. 10

Assuming that the combination material is made from two sheets of rubber, then, as shown in Fig. 1, one of the sheets of material Ris wound upon a tension roll l5. Said roll l5 has a shaft or spindle l, which is turnably mounted in the forked bearings of arms 2 of a frame F. A frictional resistance is imposed against the turning of the roll i5, by means of a band 3 which passes around a pulley which is provided upon the shaft yor spindle l of the roll l5. Said band 3 is preferably endless, and one of its ends passes around a pin which is fixed to the frame F. Said member 3 also passes through a collar 5, which may be adjusted if desired, in order toI increase the tension of the band 3, and the frictional ef.- feet secured thereby. The band 3 does not move when roll l5 is turned.

The member 3 may be made of leather, or of any other suitable material. Y

Referring again to Fig. l and to Fig. 2, the material R., which may be smooth material, is led under an idler roll 6, over an idler roll l, under an idler roll 8; then over a driven roll 9, and then over the surface of a lower drum lll, which is mounted upon a shaft l. and 8 can turn freely.

The second sheet of material Ria, which can be made of rubber if desired, is wound upon a roll or drum le. This roll i6 is provided with a shaft or spindle 60., which is provided with an 40 anti-friction'support, by means of freely turnable rolls 5l? and 5i. As indicated in Fig. 1 by the legend loose roll, the roll i6 can turn very freely, so that the material Ra can be unwoundrunder little or no tension. 45

The material Ra passes underneath a freely y turnable idler l?, and said material then passes over a positively driven and turnable roll. i8... Said material Ra then passes around an upper The members 6, 7.

drum 'l l, so that the sheets of material R and Ra 50 are subjected to pressure by the drums i i and le. 'Ihis pressure joins such sheets of material, and the combination material is then wound upon a roll 2G, which has a shaft or spindle 2l. This roll 2G may be turned by hand or by any suitable 55 c* located on the shaft 26.

device. A bearing is provided for said shaft or spindle 2|, said bearing comprising members 23 and 23a, which are suitably fixed to the frame F Vof the machine.

'I'he machine is driven by means of a belt 24, .which is driven from any suitable source of power.` Said belt 24 drives a pulley 25, which is Said shaft 26 is provided with a small gear 21, which meshes with a larger gear 28, which isrnounted upon the shaft I4 of the lower roll I0. The lower roll I0 is thus driven directly. The bearings of the shafts I4 and I2 of the rolls I0 and Il are of any suitable type, so that the rolls I0 and II presstogether the sheets of material which are fed between them. Y'

The shaft I4 of roll I0 is also Vprovided with a gear 10, which meshes with an upper'gear 'II upon the shaft I2, so that rollII is driven by gear 1I.

The pitch diameter'of gear 1I is half that of gear 1B, so that roll II turns two revolutions for each revolution of roll IB. Since said'rolls II and I0 Y may have the same diameter, although roll I0 of greater diameter than roll I I, the mafast asmaterial R. This I2 YVhas a sprocket 29, and said sprocket 29 is providedwith may be terial Ra is fed twice as a chain 3D, which drives a sprocket I8a, which Y chain 8G.

is mounted upon the shaft of theY roll I8.

V,The shaft I4 also sprocket 8| on the shaft 9a of roll 9,.by means of The rolls I8 and 9 positively feed the respective'sheetsof material R and Ra, at above mentioned different speeds to the rolls II and I0, so that the material is positively fed Vto each roll, atthe peripheralspeed of said roll. y

As shown in Figs..5 and 6, the lower roll Il) has a smooth or cylindrical periphery.

The upper roll I I is provided with outwardly and radially projecting teeth IIa. As shown. in Fig.

5, said teeth I Ia are arranged in rows, which are located in spaced planes,V saidvplanes being perpendicular to the axis` of said roll Il. Said rows Vof teeth Ila are separated by intermediate portions I Ib, which have a smooth and concave contour. Likewise, and as shown in Fig., 5, the teeth IIa of adjacent rows are arrangedin staggered relation. j

. The material R is fed between the rolls I I and Ill while said material R is stretched andwhile Yit is under tension. The material Rais fed between said rolls IIand I0 while said ma'terialrRal is substantially or wholly unstretched and while said material Ra is under 'little orno tension. If the sheets of materialR and Ra are made of rubbensaid rubber may be vulcanized or it may be partially vulcanized. Said sheets of rubber are ,connected to each other at spaced pointsiwhich correspond to the teeth IIa.. Said teeth Ila form projections or bosses 4 I'in the stretched material R, and said teethY Ila form corresponding projections or Abosses 40, in the material Ra. Said projections 40 and 4I interlock as shown in Fig. 9. Said bosses are both longitudinally and laterally separated from eachother.

lAfter ,tlieftwo sheets of material have been thus Y Y `connected at spaced points, the tensionupon the material R is released, ,afterV the sheets of joined materialghave passed beyondV the pressure zone i which 1is located between lthe rolls II'and I0. Y

The stretched material RV nowY contracts tdnorf 'Y mal shape between the points at which Ysaidmaterial R isrjoined or connected to the material 2 The eiect is to pucker or wrinklel Ythe unstretched material Ra, and the stretched material has a sprocket, which drives -V the drums Il'and I0 may be maintained in the in the drawings, each said/series of liner elements forms a zig-zag line and a herringbone effect is secured.

However the teeth I Ia maybe arranged so that .i

the line elements in each series form an irregular line of any desired contour.l s f After the sheets of material have been thus assembled, they may be vulcanized by means of a cold cure or by any other method of vulcanization which may exclude the use of pressure, so that the shape ofthe assembled sheets is not changed by the vulcanization. Y

While I have shown the joining of two sheets of material, the invention may be appliedto the joining of two or more sheets of material.

Likewise I do not wish to exclude the use of adhesive for joining the sheets of material. s

YVI/'henever refer in the claims toV a first sheet Yof material and Yto a seoond'sheet of material, it

is to be understood that I wish to include the use of three or moresheets.

Referring to Fig. '7, it may be assumed that the' a straight line.

If the junction points indicated by X in Fig. Y7 were eliminatedfby eliminating the corresponding teeth IIa., the puckers or wrinkles would be formed between the remaining junction points and said puckers or wrinkles would be formed in .f

the direction of the arrows `indicated in Fig. 7, thus producing adifferent ornamental effect and a different type of composite material.

VI de not wish te exclude from the invention e.

method whereby thematerial Rarisv maintained under tension while it is joined to the material R,

but in such case the material R is maintained undergreater tension and stretch than the ma- Y terial Ra. VInY practice, Y the material Ra is stretched and tensed to a certain extent, in order to unwind said material from the roll I6. Hence, in addition to relying on the lpucke'ring effect which/is secured by the more rapid feed of sheet order to allow for somestretch of sheet Ra, and

to increase the puckering effect which is secured by the differential feed.

I have shown the stretched I prefer to tense and stretch sheet R, in ,Y

materiei teiev'vY me relatively unstretchedmaterial,while said sheets f of material' are being joined. However, this rela-l tionship is not essential as the stretched material may then be above the unstretched material. k

Under such circumstances, and if desired, the relationship of. the drums may be reversed so that the drum YIII is above the drum I IL'VY Likewise relationship shown in Fig. 2, even if the stretched material is above the unstretched material.

I have shown preferred embodiments of my invention but it is clear that numerous changes and omissions can be made Without departing from its spirit.

I claim:

1. An ornamental elastic material comprising a first sheet or" elastic material and a second sheet of elastic material, said two sheets having spaced interconnected upstanding bosses arranged along substantially parallel lines which are spaced from each other, the bosses in each line being staggered relative to the bosses in the adjacent lines,

first sheet of elastic material and a second sheet of elastic material, said two sheets being connected to each other at spaced upstanding embossed areas, one of said sheets of material having puckered portions intermediate said spaced areas,

.said puckered portions being arranged in series,

the puckered portions of each series 'forming an irregular line.

JACOB STEIN. 

